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Loss Analysis in Perovskite Photovoltaic Modules

: Rakocevic, Lucija; Mundt, Laura; Gehlhaar, Robert; Merckx, Tamara; Aernouts, Tom; Schubert, Martin C.; Glunz, Stefan W.; Poortmans, Jef

Postprint urn:nbn:de:0011-n-5648935 (2.2 MByte PDF)
MD5 Fingerprint: 6791a4f7effca9fb24d70b57c30c148e
Erstellt am: 10.09.2020

Solar RRL 3 (2019), Nr.12, Art. 1900338, 10 S.
ISSN: 2367-198X
European Commission EC
H2020; 764047; ESPResSo
Efficient Structures and Processes for Reliable Perovskite Solar Modules
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer ISE ()
Photovoltaik; Silicium-Photovoltaik; Neuartige Photovoltaik-Technologien; Charakterisierung von Prozess- und Silicium-Materialien; Farbstoff- und Perowskitsolarzellen

Hybrid metal-halide perovskite-based thin-film photovoltaics (PVs) have the potential to become the next generation of commercialized PV technology with certified power conversion efficiencies reaching 24% on devices having 0.1 cm(2) area. Recent efforts in upscaling this technology result in an efficiency of 12.6% for 354 cm(2) modules. However, upscaling loss for perovskite-based PVs is higher than for any other PV technology. In this study, upscaling losses of devices with aperture area 0.1, 4, and 100 cm(2) are investigated, with a focus on layer inhomogeneities. Electroluminescence, dark lock-in thermography, microphotoluminescence spectroscopy, and electron spectroscopy are used to analyze and group layer inhomogeneities with a minimal size of 10 mu m and to compare loss mechanisms for radial and linear deposition techniques. Analysis results help to identify current processing pitfalls, where understanding and control of perovskite crystal formation plays the crucial role.